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South Korea's no-action letter offers assurance, but will it revive data use?

By Wooyoung Lee ( January 15, 2026, 03:44 GMT | Comment) -- South Korea’s privacy regulator has introduced no-action letters to revive the use of pseudonymized data by offering advance assurance against enforcement, aiming to reduce legal uncertainty for businesses and public institutions. The no-action letter intends to unlock the potential of pseudonymized data to be used for artificial intelligence, developing new business models and services. Whether it can increase actual data use across institutions and industries, however, remains an open question.South Korea’s privacy regulator has introduced a new mechanism to revitalize the use of pseudonymized data by issuing no-action letters that effectively grant regulatory assurance against enforcement in advance....

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